With Week 4 of the NFL season underway, you should be starting to get a solid feel for your fantasy football roster.

Surely, you've experienced some injuries, disappointments, pleasant surprises and everything in between. A good fantasy owner expects the unexpected and is able to respond with smart acquisitions through the waiver wire.

But if your NFL player memory bank is limited and you don't follow things as closely as your friends, you might be in a bind. Or, if you are thoroughly knowledgeable of NFL happenings, maybe you're still in need of a second opinion.

If either is the case, and you're trying to identify the next diamond-in-the-rough fantasy star, then look no further.

Here are the top somewhat low-key players who should be on your watchlist no matter what.

RB Andre Brown, New York Giants

An Ahmad Bradshaw neck injury has forced the starting running back for the New York Giants to ride the bench while youngsters Andre Brown and David Wilson try to produce.

Wilson was a first-round draft pick last April and was expected to add an exciting element to the Giants offense, but the coaching staff clearly doesn't trust him yet after allowing him to carry the ball just six times throughout the first three games.

Instead, the Giants have been leaning on 25-year-old Andre Brown, who has answered with solid production.

In Week 2, Brown picked up 71 yards and a score against Tampa Bay, while last week he had a phenomenal game against Carolina with 113 yards and two touchdowns.

At this point, as long as Bradshaw is limited, Brown is a valuable asset. If he's available in your league, then sign him immediately.

RB Daryl Richardson, St. Louis Rams

If you used an early draft pick on Pro Bowl running back Steven Jackson and were expecting solid production out of him thanks to Jeff Fisher's run-first mentality, then chances are you have been disappointed.

In the opening week, Jackson was held to just 53 yards on 21 carries.

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In Week 2 against Washington, he looked very promising in the first half after carrying the ball just nine times for 58 yards, but a groin injury sidelined him for the second half of the game.

The groin injury was clearly still a factor in Week 3 against Chicago, as Jackson picked up only 29 yards on 11 carries.

Meanwhile, rookie Daryl Richardson has been very productive in his limited playing time.

Richardson had 102 total yards in Week 2 after replacing Jackson in the second half, and he is averaging 5.7 yards per carry on the year.

If Jackson continues to struggle with his injury, expect Richardson's role to rapidly increase.

WR Alshon Jeffery, Chicago Bears

It was assumed that rookie Alshon Jeffery would play a secondary role behind veteran Brandon Marshall, and while that's still the case, Jeffery's role will gradually increase as the season progresses.

In Week 1, Jeffery had a great NFL debut with 80 yards and a touchdown.

He had just one catch for seven yards the following week, but in Week 3 against St. Louis, he played a larger role and had a season-high five receptions.

Expect quarterback Jay Cutler to target Jeffery more as the year goes on.

The cynical and unforgiving New York fans and media members have tarnished quarterback Mark Sanchez' reputation.

The venomous dribble coming out of that toxic fanbase has forced people to readily assume that Sanchez is among the worst quarterbacks in the league, when that is far from the case.

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Beneath the nonsense is the overlooked fact that Sanchez has improved every year he has been in the league and already has considerable big-game experience.

Sanchez has a solid start to the year with 266 yards and three touchdowns in Week 1, but he has been average ever since.

Regardless, keep your eye on the young quarterback. There's a chance his play will level out, making him a solid fantasy asset, even he's added only as a backup.

RB Lamar Miller, Miami Dolphins

Reggie Bush had a great start to the 2012 season, but he was sidelined with a knee injury a week ago against the Jets.

Bush should not be sidelined for long, but it's fair to assume that he'll see a reduced role until he's fully healed, which leaves youngsters Daniel Thomas and Lamar Miller fighting for the leftover scraps.

Thomas, an addition made by the previous regime, is not exactly the coaches' favorite and was frequently in their doghouse during HBO's Hard Knocks.

As a result, Miller has been getting a decent amount of carries.

Miller has 113 yards and a touchdown over the last two weeks, and his workload will increase as long as Bush is banged up.

Even if Bush is in the game, Miller is still going to see a decent number of touches for the remainder of the season.

TE Kevin Boss, Kansas City Chiefs

Kevin Boss was a solid addition for the Kansas City Chiefs during free agency.

Unfortunately, even though Boss is a target Matt Cassel is comfortable with, the tight end has missed some time due to a head injury.

Boss should eventually return to action and is expected to be a key piece to the offense, which is why he is someone to keep an eye on.